6 Morceaux, Op. 19 (version for cello and orchestra): No. 4. Nocturne

Recording identifiers

ISRC

HKI199318504

Release date of the album this recording appears on

2021-11-12

CopyrightID (CopyrightChains transaction hash)

0x308efd966fe6483bc9b62792dbd512ace8da93e0ba487f2f68d7cb925a72fc12

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T08:30:10Z

Bitcoin block

960229

Canonical record hash

sha256:4aedf5cf1ac6273c6998508b4ba68c39d7a447a9aac87a0de4bc50467ab1d708

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC HKI199318504

What this proof establishes

This recording was released in 2021, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.